The Astro Harness also called A4 is used exclusively by Orion of the New Gods, the Astro-Harness allows Orion greeter control over Astro Force.

Capabilities:

• Astro-Force Projection: The most potent power of this device is its projection of Positive and Negative Astro-Force in beams originating from the hand portions of the harness for small blasts, and from the hands and the chest plate for blasts against inanimate objects, large starships or invulnerable super beings. This weapon is so powerful, it has been used from orbit to attack land dwelling targets or to attack other space craft. The Astro-Force projection can also be used to augment Orion's physical strength to an unknown degree, possibly limitless. The right hand produces Positive Astro-Force, and the left hand produces Negative Astro-Force.

• • Energy Manipulation: The Astro-harness can also acts as a force field barrier to attacks directed at Orion, protecting him from injury. It can also absorb stray energy from the environment and other beings in order to power itself, in the event that its access to the source has been cut off.
  • Magnetic Control: this is similar to a tractor beam, also allows Orion to manipulate magnetic forces.

• Interstellar Flight:
  

• Self-Repairing: Like much of the technology of New Genesis, the Astro-Harness is capable of self-repair and will repair itself completely as long as any portion of the device exists. The Harness can be repaired using the Astro Force itself.

• Programmable: The harness also seems to harbor a sentience of it's own and is freely capable of mentally communicating with Orion.
• Teleportation: Can create Boom-Tubes for Orion to travel to any location in the Multiverse.
• Tracking: A4 can analyze DNA from a small sample and track the source across long distances.